PR. R. WEGMANN - CNRI / SCIENCE PHOTO LIBRARY PR. R. WEGMANN - CNRI / SCIENCE PHOTO LIBRARY
Arteriovenous fistula. Light micrograph of a section through an arteriovenous fistula (or arteriovenous shunt) - an abnormal connection between an artery and a vein. This condition may be congenital or due to trauma or other conditions such as an aneurism.
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